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Four Dimensional Plane Wave String Solutions with Coset CFT Description

Sfetsos, K and Tseytlin, AA (1994) Four Dimensional Plane Wave String Solutions with Coset CFT Description Nucl.Phys.B, 427. pp. 245-272.

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Abstract

We present a number of D=4 bosonic and heterotic string solutions with a covariantly constant null Killing vector which, like the solution of Nappi and Witten (NW), correspond to (gauged) WZW models and thus have a direct conformal field theory interpretation. A class of exact plane wave solutions (which includes the NW solution) is constructed by `boosting' the twisted products of two D=2 `cosmological' or `black-hole' cosets of SL(2,R) and SU(2). We describe a general limiting procedure by which one can construct new solutions with a covariantly constant null Killing vector starting with known string backgrounds. By applying a non-abelian duality transformation to the NW model we find a D=4 solution which has a covariantly constant null Killing vector but is not a plane wave. Higher dimensional bosonic backgrounds with isometries can be interpreted as lower dimensional backgrounds with extra gauge fields. Some of them are at the same time solutions of the heterotic string theory. In particular, the NW model represents also a D=3 `gravi-electromagnetic' heterotic string plane wave. In addition to the (1,1) supersymmetric embeddings of bosonic solutions we construct a number of non-trivial (1,0) supersymmetric exact D=4 heterotic string plane wave solutions some of which are related (by a boost and analytic continuation) to limiting cases of D=4 heterotic black hole solutions.

Item Type: Article
Authors :
NameEmailORCID
Sfetsos, Kk.sfetsos@surrey.ac.ukUNSPECIFIED
Tseytlin, AAUNSPECIFIEDUNSPECIFIED
Date : 12 April 1994
Identification Number : 10.1016/0550-3213(94)90276-3
Uncontrolled Keywords : hep-th, hep-th
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:27
Last Modified : 17 May 2017 12:27
URI: http://epubs.surrey.ac.uk/id/eprint/835384

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